LATEST RELEASES:
Zip 3.00 was released on 7 July 2008.
WiZ 5.03 was released on 11 March 2005.
UnZip 6.0 was released on 29 April 2009.
MacZip 1.06 was released on 22 February 2001.
See the Zip, UnZip and
WiZ pages for current status and download locations.

In addition, a new set of discussion forums was set up in October 2007. These replace
the older QuickTopic
forum, which was overrun by spam. (The spam postings have since been
deleted, but further posts to the old forum are permanently disabled.)

About Info-ZIP

Info-ZIP is a diverse, Internet-based workgroup of about 20 primary
authors and over one hundred beta-testers, formed in 1990 as a mailing
list hosted by Keith Petersen on the original SimTel site at the White
Sands Missile Range in New Mexico.

Info-ZIP's purpose is to provide free, portable, high-quality versions of the
Zip and UnZip
compressor-archiver utilities that are compatible with the DOS-based
PKZIP by PKWARE, Inc.

Info-ZIP supports hardware from microcomputers all the way up to Cray
supercomputers, running on almost all versions of Unix, VMS, OS/2,
Windows 9x/NT/etc. (a.k.a. Win32), Windows 3.x, Windows CE, MS-DOS, AmigaDOS,
Atari TOS, Acorn RISC OS, BeOS, Mac OS, SMS/QDOS, MVS and OS/390 OE, VM/CMS,
FlexOS, Tandem NSK and Human68K (Japanese). There is also some (old) support
for LynxOS, TOPS-20, AOS/VS and Novell NLMs. Shared libraries (DLLs) are
available for Unix, OS/2, Win32 and Win16, and graphical interfaces are
available for Win32, Win16, WinCE and Mac OS.

Info-ZIP code has been incorporated into a number of third-party products as
well, both commercial and freeware. Some of the more interesting ones (well,
historically speaking) include
the use of UnZip code in the unzip.dll
distributed with IBM's OS/2 Warp BonusPak and WebExplorer,
as part of the reinstallation code for the IBM Aptivas preloaded with OS/2
Warp, and as part of IBM's Infoprint product. Sun used Info-ZIP's
self-extractor to distribute the NT version of their HotJava browser,
Novell uses UnZip for NetWare 6 installation, and SAP includes it in
Business One.
Various Windows products such as WinZip
and the DynaZIP DLLs incorporate Info-ZIP code, too. And let us not
forget Pretty Good Privacy (PGP), an excellent encryption program that
uses Info-ZIP code as a first step in encrypting files. Info-ZIP's primary
compression engine has also been spun off into the free
zlib compression library, used in
Netscape/Mozilla/Firefox, the Linux kernel, Windows,
Java, virtually all PNG-supporting software, and countless other products.

In addition, Info-ZIP would like to tip our collective hat to
Samuel H. Smith, the
gentleman who wrote the original MS-DOS unzip on which Info-ZIP's
UnZip 3.0 was based--and who kindly made the source code available
for free. Even though virtually all of his code has by now been rewritten
from scratch, Info-ZIP still owes Mr. Smith a debt of gratitude for getting
us into this mess. A package of virtual chocolate-chip cookies is in the
e-mail.